Is this true that hydrocodone (metabolizes into hydromorphone)?

what i am saying is so that i wouldnt matter which one you did you would still test positive for opiates correct? elaborate more on the subject if you can! for instnace if you get drug screened by a probation officer. they would just be ale to tell i did opiates and not the exact one, i get tested with a five panel drug screen for five different drugs. (Urine test) and i have a perscription for hydrocodone. so does it matter if i do one or ther other as long as i am perscribded a drug that is derived from opiates, like hydrocodone???